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Luby Transform Coding Aided Iterative Detection for Downlink SDMA Systems

Luby Transform Coding Aided Iterative Detection for Downlink SDMA Systems
Luby Transform Coding Aided Iterative Detection for Downlink SDMA Systems
A Luby Transform (LT) coded downlink Spatial Division Multiple Access (SDMA) system using iterative detection is proposed, which invokes a low-complexity near-Maximum-Likelihood (ML) Sphere Decoder (SD). The Ethernet-based Internet section of the transmission chain inflicts random packet erasures, which is modelled by the Binary Erasure Channel (BEC), which the wireless downlink imposes both fading and noise. A novel log-Likelihood Ratio based packet reliability meric is used for identifying the channel-decoded packets, which are likely to be error-infested. Packets having residual errors must not be passed on to the KT decoder for the sake of avoiding LT-decoding –induced error propagation. The proposed scheme is capable of maintaining an infinitesimally low packet error ratio in the downlink of the wireless Internet for Eb/n0 values in excess of about 3dB.
397-402
Wei, C-Y
3f1bf024-c020-42c3-9bfe-0a45728c945d
Nguyen Dang, T
0f9e7331-0bb3-4303-8034-b7bb119596ac
Wu, N
e9f4d835-cf2f-4563-9f57-6306d5ccc0da
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Yang, L-L
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Wei, C-Y
3f1bf024-c020-42c3-9bfe-0a45728c945d
Nguyen Dang, T
0f9e7331-0bb3-4303-8034-b7bb119596ac
Wu, N
e9f4d835-cf2f-4563-9f57-6306d5ccc0da
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Yang, L-L
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1

Wei, C-Y, Nguyen Dang, T, Wu, N, Akhtman, J., Yang, L-L and Hanzo, L (2007) Luby Transform Coding Aided Iterative Detection for Downlink SDMA Systems. IEEE SiPS, China. 17 - 19 Oct 2007. pp. 397-402 .

Record type: Conference or Workshop Item (Paper)

Abstract

A Luby Transform (LT) coded downlink Spatial Division Multiple Access (SDMA) system using iterative detection is proposed, which invokes a low-complexity near-Maximum-Likelihood (ML) Sphere Decoder (SD). The Ethernet-based Internet section of the transmission chain inflicts random packet erasures, which is modelled by the Binary Erasure Channel (BEC), which the wireless downlink imposes both fading and noise. A novel log-Likelihood Ratio based packet reliability meric is used for identifying the channel-decoded packets, which are likely to be error-infested. Packets having residual errors must not be passed on to the KT decoder for the sake of avoiding LT-decoding –induced error propagation. The proposed scheme is capable of maintaining an infinitesimally low packet error ratio in the downlink of the wireless Internet for Eb/n0 values in excess of about 3dB.

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More information

Published date: 2007
Additional Information: Event Dates: 17-19 Oct 2007
Venue - Dates: IEEE SiPS, China, 2007-10-17 - 2007-10-19
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 264956
URI: http://eprints.soton.ac.uk/id/eprint/264956
PURE UUID: 8f6e7053-a26f-4569-9658-dd3e56da8193
ORCID for L-L Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 12 Dec 2007 15:17
Last modified: 26 Nov 2019 02:06

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